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gh-108277: Fix test_os TimerfdTests by vstinner · Pull Request #110515 · python/cpython

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x Fedora LTO 3.x has failed when building commit 7e30821.

What do you need to do:

  1. Don't panic.
  2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
  3. Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/55/builds/3954) and take a look at the build logs.
  4. Check if the failure is related to this commit (7e30821) or if it is a false positive.
  5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/55/builds/3954

Failed tests:

  • test.test_multiprocessing_fork.test_processes

Summary of the results of the build (if available):

==

Click to see traceback logs
remote: Enumerating objects: 5, done.        
remote: Counting objects:  20% (1/5)        
remote: Counting objects:  40% (2/5)        
remote: Counting objects:  60% (3/5)        
remote: Counting objects:  80% (4/5)        
remote: Counting objects: 100% (5/5)        
remote: Counting objects: 100% (5/5), done.        
remote: Compressing objects:  33% (1/3)        
remote: Compressing objects:  66% (2/3)        
remote: Compressing objects: 100% (3/3)        
remote: Compressing objects: 100% (3/3), done.        
remote: Total 5 (delta 2), reused 3 (delta 2), pack-reused 0        
From https://github.com/python/cpython
 * branch                  main       -> FETCH_HEAD
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HEAD is now at 7e30821b17 gh-108277: Fix test_os TimerfdTests (#110515)
Switched to and reset branch 'main'

In function ‘_io_FileIO_close_impl’,
    inlined from ‘_io_FileIO_close’ at ./Modules/_io/clinic/fileio.c.h:33:12:
./Modules/_io/fileio.c:175:9: warning: ‘exc’ may be used uninitialized [-Wmaybe-uninitialized]
  175 |         _PyErr_ChainExceptions1(exc);
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
./Modules/_io/fileio.c: In function ‘_io_FileIO_close’:
./Modules/_io/fileio.c:160:15: note: ‘exc’ was declared here
  160 |     PyObject *exc;
      |               ^~~
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:611:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:501:22:
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  348 |         if (s == dot) *s++ = '.'; *s++ = '0' + (char)(x / d); x %= d
      |                                   ~~~~~^~~~~~~~~~~~~~~~~~~~~
./Modules/_decimal/libmpdec/io.c:348:40: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:607:18:
./Modules/_decimal/libmpdec/io.c:359:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:360:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:361:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:358:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:359:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:360:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:357:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:358:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:359:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:356:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  356 |     case 18: EXTRACT_DIGIT(s, x, 100000000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:357:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:358:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:360:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:361:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:362:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:361:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:362:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:363:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:362:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:363:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:365:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:363:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:365:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:366:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:365:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:366:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:367:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:366:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:367:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:368:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:367:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:368:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:369:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:368:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:369:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:370:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:369:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:370:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:371:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:370:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:371:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:372:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:371:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:372:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:373:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:372:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:373:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:373:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
In function ‘word_to_string’,
    inlined from ‘coeff_to_string’ at ./Modules/_decimal/libmpdec/io.c:410:13,
    inlined from ‘_mpd_to_string’ at ./Modules/_decimal/libmpdec/io.c:501:22:
./Modules/_decimal/libmpdec/io.c:359:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:360:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:361:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:358:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:359:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:360:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:357:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:358:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:359:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  359 |     case 15: EXTRACT_DIGIT(s, x, 100000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:356:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  356 |     case 18: EXTRACT_DIGIT(s, x, 100000000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:357:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  357 |     case 17: EXTRACT_DIGIT(s, x, 10000000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:358:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  358 |     case 16: EXTRACT_DIGIT(s, x, 1000000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:360:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  360 |     case 14: EXTRACT_DIGIT(s, x, 10000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:361:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:362:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:361:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  361 |     case 13: EXTRACT_DIGIT(s, x, 1000000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:362:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:363:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:362:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  362 |     case 12: EXTRACT_DIGIT(s, x, 100000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:363:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:365:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:363:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  363 |     case 11: EXTRACT_DIGIT(s, x, 10000000000ULL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:365:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:366:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:365:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  365 |     case 10: EXTRACT_DIGIT(s, x, 1000000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:366:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:367:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:366:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  366 |     case 9:  EXTRACT_DIGIT(s, x, 100000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:367:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:368:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:367:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  367 |     case 8:  EXTRACT_DIGIT(s, x, 10000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:368:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:369:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:368:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  368 |     case 7:  EXTRACT_DIGIT(s, x, 1000000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:369:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:370:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:369:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  369 |     case 6:  EXTRACT_DIGIT(s, x, 100000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:370:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:371:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:370:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  370 |     case 5:  EXTRACT_DIGIT(s, x, 10000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:371:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:372:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:371:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  371 |     case 4:  EXTRACT_DIGIT(s, x, 1000UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:372:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:373:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:372:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  372 |     case 3:  EXTRACT_DIGIT(s, x, 100UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:373:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
  373 |     case 2:  EXTRACT_DIGIT(s, x, 10UL, dot);
      |              ^
./Modules/_decimal/libmpdec/io.c:373:14: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
In function ‘_bufferedreader_read_generic’,
    inlined from ‘_io__Buffered_read_impl’ at ./Modules/_io/bufferedio.c:969:0,
    inlined from ‘_io__Buffered_read’ at ./Modules/_io/clinic/bufferedio.c.h:525:0:
./Modules/_io/bufferedio.c:1792: warning: ‘__builtin_memcpy’ specified bound between 9223372036854775808 and 18446744073709551613 exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=]
 1792 |             memcpy(out + written, self->buffer + self->pos, r);
      | 

make: *** [Makefile:2019: buildbottest] Error 5